Despite the promise of endless summer within the name, in fact the Light of the Two Trees did eventually come to an end. Soon after Melkor's release from imprisonment by the Valar, he fled from their land, and later returned with Ungoliant to wreak his revenge. Coming to the Green Mound, they destroyed both of the Trees, causing darkness to fall on Valinor and the time of 'ever-summer' to come to a sudden and untimely end.